Home / 1,293,458,643.90-1,940,471,401.05-638,723,331.90

Finding the Fourth Proportional to 1,293,458,643.90, 1,940,471,401.05 and 638,723,331.90

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Solution

The fourth proportional to 1,293,458,643.90, 1,940,471,401.05 and 638,723,331.90 is: 958,224,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,458,643.90 : 1,940,471,401.05 = 638,723,331.90 : x
  2. Step 2: Convert to fraction form
    1,293,458,643.90/1,940,471,401.05 = 638,723,331.90/x
  3. Step 3: Cross multiply
    1,293,458,643.90x = 1,940,471,401.05 × 638,723,331.90
  4. Step 4: Simplify right side
    1,293,458,643.90x = 1,239,424,358,735,316,992
  5. Step 5: Solve for x
    x = 1,239,424,358,735,316,992/1,293,458,643.90
  6. Step 6: Final answer
    x = 958,224,961.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.